Private Sub Form_Load()
Combo1.Clear
Combo1.AddItem "MyControlName"
End Sub
Combo1.Clear
Combo1.AddItem "MyControlName"
End Sub
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'显示自已的控件
'自己的控件.SetFocus
End Sub
Private Sub Combo1_DropDown()
'显示自已的控件
'自己的控件.SetFocus
End Sub
你们答的又是什么?
如果真是这么初级,我想aproc肯定不会问!
所以,我决不会这样回答这类问题。
因为这样不仅是对别人的不尊重。(你们将自己看得太高,将别人看得太低)
实际是给自己画像。
以下是什么代码?VB 幼儿园的代码!!!!!!!!!!!!
Private Sub Combo1_DropDown()
'显示自已的控件
'自己的控件.SetFocus
End Sub
Frame1.Visible = False
Frame1.SetFocus
'注: 这是世纪国际著名VB 大师的手笔
End Sub
但下面的代码一定可以提供一个思路:'In a Module..
private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (byval hwnd as Long, byval nIndex as Long, byval dwNewLong as Long) as Longprivate Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (byval lpPrevWndFunc as Long, byval hwnd as Long, byval Msg as Long, byval wParam as Long, byval lParam as Long) as Longprivate Declare Function SendMessage Lib "user32" Alias "SendMessageA" (byval hwnd as Long, byval wMsg as Long, byval wParam as Long, lParam as Any) as Longprivate Const GWL_WNDPROC = (-4)private Const WM_CTLCOLORLISTBOX = &H134private Const LB_GETCURSEL = &H188private lPrevWndFunc as Longpublic oLabel as Labelprivate Function WindowProc(byval hwnd as Long, byval Msg as Long, byval wParam as Long, byval lParam as Long) as Long Dim iIndex as Long If Msg = WM_CTLCOLORLISTBOX then iIndex = SendMessage(lParam, LB_GETCURSEL, 0&, byval 0&) If iIndex >= 0 then oLabel = "Item Index: " & iIndex
End If WindowProc = CallWindowProc(lPrevWndFunc, hwnd, Msg, wParam, lParam)End Functionpublic Sub SubClassIt(byval hwnd as Long, byval Add as Boolean)
If Add then
lPrevWndFunc = SetWindowLong(hwnd, GWL_WNDPROC, AddressOf WindowProc)
else
Call SetWindowLong(hwnd, GWL_WNDPROC, lPrevWndFunc)
End IfEnd SubIn a Form, with a Label and a ComboBox..private Sub Form_Load() Dim iIndex as Long
set oLabel = Label1
SubClassIt Combo1.hwnd, true for iIndex = 1 to 10
Combo1.AddItem "Item " & iIndex
nextEnd Subprivate Sub Form_Unload(Cancel as Integer) SubClassIt Combo1.hwnd, falseEnd Sub
我放一个textbox再放一个小的commandbutton,button上放个图,伪装成combox
不就可以了吗?
晕!又一个简单问题复杂化
我放一个textbox再放一个小的commandbutton,button上放个图,伪装成combox
不就可以了吗?
回复人: calligraphy(小九) (2001-12-29 0:09:14) 得0分
: fuxc(Michael) 说的对 又一个简单问题复杂化:抽水马桶说的对:还是用茅坑
晕!又一个简单问题复杂化
我放一个textbox再放一个小的commandbutton,button上放个图,伪装成combox
不就可以了吗?
回复人: calligraphy(小九) (2001-12-29 0:09:14) 得0分
: fuxc(Michael) 说的对 又一个简单问题复杂化:抽水马桶说的对:还是用茅坑骑马最好,要用什么骄车?同样,自来水,煤气灶。全不要
分一下级别
初级与高级一起讨论
就象与小学生讨论微积分
明明用两个简单控件可以解决的问题,非得写上n行代码,还要调api,
不是放着小轿车不坐,非要骑马吗?
就用text,commad。 和 list 的组合不行吗?
text_dbclick 时tree_setfocus
command_click 时tree_setfocus
list1_mouseup 时
list.visble=flase
text.text=tree.Selectitem.text
text.setfocus
tree_lostfocus 时
list.visble=flase
text.text=tree.Selectitem.text
text.setfocus
我个人认为是可行的Private Sub Command2_Click()
List1.Visible = Not List1.Visible
If List1.Visible Then
List1.SetFocus
List1.ListIndex = 0
Else
Text1.Text = List1.List(List1.ListIndex)
End If
End SubPrivate Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
If List1.Visible Then List1_LostFocus
End SubPrivate Sub List1_LostFocus()
List1.Visible = False
Text1.SetFocus
Text1.Text = List1.List(List1.ListIndex)
End SubPrivate Sub List1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
List1_LostFocus
End SubPrivate Sub Text1_DblClick()
List1.Visible = True
List1.SetFocus
List1.ListIndex = 0
End Sub
你那种不可能封装为控件。答案请去:http://vbaccelerator.com/codelib/ddtoolwn/ddform.htm
Private Sub Combo1_DropDown()
Frame1.Visible = False
Frame1.SetFocus
'注: 这是世纪国际著名VB 大师的手笔
End Subhehe...............
fram1.setfocusRun time error!! On Error Resumme Next^_^
=====
Option Explicit
Public defWinProc As LongPublic Const GWL_WNDPROC As Long = -4
Private Const CBN_DROPDOWN As Long = 7
Private Const WM_LBUTTONDOWN As Long = &H201
Private Const WM_KEYDOWN As Long = &H100
Private Const VK_F4 As Long = &H73Private Declare Function CallWindowProc _
Lib "user32" Alias "CallWindowProcA" _
(ByVal lpPrevWndFunc As Long, _
ByVal hwnd As Long, ByVal Msg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As LongPrivate Declare Function SendMessage Lib "user32" _
Alias "SendMessageA" _
(ByVal hwnd As Long, _
ByVal wMsg As Long, _
ByVal wParam As Long, _
lParam As Any) As LongPublic Declare Function SetWindowLong _
Lib "user32" Alias "SetWindowLongA" _
(ByVal hwnd As Long, ByVal nIndex As Long, _
ByVal dwNewLong As Long) As Long
Public Sub Unhook(hwnd As Long)If defWinProc <> 0 ThenCall SetWindowLong(hwnd, _
GWL_WNDPROC, _
defWinProc)
defWinProc = 0
End IfEnd Sub
Public Sub Hook(hwnd As Long)'Don't hook twice or you will
'be unable to unhook it.
If defWinProc = 0 ThendefWinProc = SetWindowLong(hwnd, _
GWL_WNDPROC, _
AddressOf WindowProc)End IfEnd Sub
Public Function WindowProc(ByVal hwnd As Long, _
ByVal uMsg As Long, _
ByVal wParam As Long, _
ByVal lParam As Long) As Long'only if the window is the combo box...
If hwnd = Form1.Combo1.hwnd ThenSelect Case uMsgCase CBN_DROPDOWN 'the list box of a combo
'box is about to be made visible.'return 1 to indicate we ate the message
WindowProc = 1Case WM_KEYDOWN 'prevent the F4 key from showing
'the combo's listIf wParam = VK_F4 Then'set up the parameters as though a
'mouse click occurred on the combo,
'and call this routine again
Call WindowProc(hwnd, WM_LBUTTONDOWN, 1, 1000)Else'there's nothing to do keyboard-wise
'with the combo, so return 1 to
'indicate we ate the message
WindowProc = 1End IfCase WM_LBUTTONDOWN 'process mouse clicks'if the listview is hidden, position and show it
If Form1.ListView1.Visible = False ThenWith Form1
.ListView1.Left = .Combo1.Left
.ListView1.Width = .Combo1.Width
.ListView1.Top = .Combo1.Top + .Combo1.Height + 1
.ListView1.Visible = True
.ListView1.SetFocus
End WithElse'the listview must be visible, so hide it
Form1.ListView1.Visible = False
End If'return 1 to indicate we processed the message
WindowProc = 1Case Else'call the default window handler
WindowProc = CallWindowProc(defWinProc, _
hwnd, _
uMsg, _
wParam, _
lParam)End SelectEnd If 'If hwnd = Form1.Combo1.hwndEnd Function===='In a form, add a combo box, a listview and three command buttons=====
Option ExplicitPrivate bKeepOpen As BooleanPrivate Sub Form_Load()Dim c As Long
Dim chd As ColumnHeader
Dim itmx As ListItem'Add some dummy data to the listview and hide
With ListView1Set chd = .ColumnHeaders.Add(, , "Name", 1000)
Set chd = .ColumnHeaders.Add(, , "Col 2", 1000)
Set chd = .ColumnHeaders.Add(, , "Col 3", 1000)
Set chd = .ColumnHeaders.Add(, , "Col 4", 600)For c = 1 To 15
Set itmx = .ListItems.Add(, , Screen.Fonts(c))
itmx.SubItems(1) = "screen"
itmx.SubItems(2) = "font"
itmx.SubItems(3) = c
Next.View = lvwReport
.FullRowSelect = True 'vb6 only
.BorderStyle = ccNone
.Visible = FalseEnd With'set inital state of command buttons
Command1.Caption = "hook combo"
Command2.Caption = "unhook combo"
Command3.Caption = "unhook && end"
Command1.Enabled = True
Command2.Enabled = False
End Sub
Private Sub Command1_Click()If defWinProc = 0 Then
Hook Combo1.hwnd
Command1.Enabled = False
Command2.Enabled = True
End IfEnd Sub
Private Sub Command2_Click()'unhook the combo
If defWinProc <> 0 Then
Unhook Combo1.hwnd
defWinProc = 0
Command1.Enabled = True
Command2.Enabled = False
End IfEnd Sub
Private Sub Command3_Click()Unload MeEnd Sub
Private Sub Form_Unload(Cancel As Integer)If defWinProc <> 0 Then Unhook Combo1.hwndEnd Sub
Private Sub List1_KeyDown(KeyCode As Integer, Shift As Integer)'set flag to allow arrow and enter
'keys to simulate behaviour of normal
'combo
bKeepOpen = TrueEnd Sub
Private Sub List1_KeyPress(KeyAscii As Integer)'set flag to allow arrow and enter
'keys to simulate behaviour of normal
'combo
If KeyAscii = vbKeyReturn Then'simulate selecting item with enter
bKeepOpen = False
Call ListView1_Click
Else'alpha or arrow keys being used,
'so keep open
bKeepOpen = TrueEnd IfEnd Sub
Private Sub ListView1_Click()Dim itmx As ListItemIf ListView1.ListItems.Count > 0 ThenSet itmx = ListView1.SelectedItem'For a style 0 combo, you can not assign
'to the Text property from within the click
'event, so the selected item must be 'added'
'as the only combo item, and selected using
'its listindex property.
'
'For a style 2 combo, the text property
'can't be set unless there is an exact
'match to a list item, so again we fake it
'by adding the selection to the combo and
'selecting it.
'
'Finally, since the tabs can't be used
'in the combo's edit window, as it doesn't
'support tabstops either, on selection we'll
'display the main listview item
With Combo1
.Clear
.AddItem itmx.Text
.ListIndex = 0
End WithEnd IfIf bKeepOpen = False Then
ListView1.Visible = False
Combo1.SetFocus
End IfEnd Sub
=====
我是想自己做个控件。其中包括一个combox,还有好多checkbox.操作时点击combox,出现那些checkbox,点选其中的一部分,确认,将选中的结果显示在combox上。准备用来处理一个人会几种外语之类的问题。
我没有仔细看Bardon的答案,不过还是把分给他。感谢他的热情。也谢谢其它人。